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  <title>Write session data</title>
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  <div id="layout-content"><div id="sessionhandlerinterface.write" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">SessionHandlerInterface::write</h1>
  <p class="verinfo">(PHP 5 &gt;= 5.4.0, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">SessionHandlerInterface::write</span> &mdash; <span class="dc-title">Write session data</span></p>

 </div>

 <div class="refsect1 description" id="refsect1-sessionhandlerinterface.write-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>SessionHandlerInterface::write</strong></span>(<span class="methodparam"><span class="type">string</span> <code class="parameter">$id</code></span>, <span class="methodparam"><span class="type">string</span> <code class="parameter">$data</code></span>): <span class="type">bool</span></div>

  <p class="para rdfs-comment">
   Writes the session data to the session storage. Called by
   <span class="function"><a href="function.session-write-close.html" class="function">session_write_close()</a></span>, when <span class="function"><a href="function.session-register-shutdown.html" class="function">session_register_shutdown()</a></span> fails, or during a normal shutdown.
   Note: <span class="function"><a href="sessionhandlerinterface.close.html" class="function">SessionHandlerInterface::close()</a></span> is called immediately after this function.
  </p>
  <p class="para">
   PHP will call this method when the session is ready to be saved and closed. It encodes
   the session data from the <var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var> superglobal to a serialized string and passes this
   along with the session ID to this method for storage.  The serialization method used
   is specified in the <a href="session.configuration.html#ini.session.serialize-handler" class="link">session.serialize_handler</a> setting.
  </p>
  <p class="para">
   Note this method is normally called by PHP after the output buffers have been closed unless explicitly
   called by <span class="function"><a href="function.session-write-close.html" class="function">session_write_close()</a></span>
  </p>
 </div>


 <div class="refsect1 parameters" id="refsect1-sessionhandlerinterface.write-parameters">
  <h3 class="title">参数</h3>
  <dl>
   
    <dt>
<code class="parameter">id</code></dt>

    <dd>

     <p class="para">
      The session id.
     </p>
    </dd>

   
   
    <dt>
<code class="parameter">data</code></dt>

    <dd>

     <p class="para">
      The encoded session data.  This data is the result of the PHP internally encoding the <var class="varname"><a href="reserved.variables.session.html" class="classname">$_SESSION</a></var> superglobal to a serialized
      string and passing it as this parameter.  Please note sessions use an alternative serialization method.
     </p>
    </dd>

   
  </dl>

 </div>


 <div class="refsect1 returnvalues" id="refsect1-sessionhandlerinterface.write-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   会话存储的返回值（通常成功返回 0，失败返回 1）。
  </p>
 </div>


 <div class="refsect1 seealso" id="refsect1-sessionhandlerinterface.write-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member">
     The <a href="session.configuration.html#ini.session.serialize-handler" class="link">session.serialize_handler</a>
     configuration directive.
    </li>
   </ul>
  </p>
 </div>


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